MAFT Settings

 

 

Mode Switch

 

Switch 1

On = 6 Cylinders

Off = 8 Cylinders

Switch 2

On = Old Style ECM Turbo V6, TPI V8

Off = New Style PCM LT1, LS1, SC3800, Truck

Switch 3

On = Output signal limited (blocks DTC code 102 on OBDII Vehicles

Off = LT1, LS1

Switch 4

Late Model vehicles:

On = 85 mm MAF on cars that were originally equipped with 3.5

 

 

MAF Base

0

3.5 LT1/LS1 MAF Sensor Turbo V6

No Change

1

3.5 LT1/LS1 MAF Sensor Turbo V6 (richer at idle)

5% Rich

2

3.5 LT1/LS1 MAF Sensor Turbo V6 (leaner at idle)

10% Rich

3

3 Caprice/Impala MAF Sensor Turbo V6

15% Rich

4

3 Caprice/Impala MAF Sensor Turbo V6 (richer at idle)

20% Rich

5

3 Caprice/Impala MAF Sensor Turbo V6 (leaner at idle)

25% Rich

6

85mm Plastic MAF Turbo V6

50% Lean

7

85mm Plastic MAF Turbo V6 (richer at idle)

45% Lean

8

85mm Plastic MAF Turbo V6 (leaner at idle)

40% Lean

9

Not Used

35% Lean

A

Not Used

30% Lean

B

Not Used

25% Lean

C

Not Used

20% Lean

D

Not Used

15% Lean

E

Not Used

10% Lean

F

Not Used

5% lean

 

 

MAF WOT

0

No Change

1

2% Rich

2

4% Rich

3

6% Rich

4

8% Rich

5

10% Rich

6

12% Rich

7

14% Rich

8

Not Used

9

14% Lean

A

12% Lean

B

10% Lean

C

8% Lean

D

6% Lean

E

4% Lean

F

2% Lean